Experimental Study on Strengthening and Sealing Materials and Their Application in Coal Mines

Table 3

R² analysis.

Source	Sequential value	Adjusted R^2	Predicted R^2
Linear	<0.0001	0.9239	0.8845
2FI	0.4083	0.9250	0.8414
Quadratic	0.0007	0.9893	0.9500	Suggested
Cubic	0.1535	0.9976